# coding=utf-8
import thread
from time import sleep, ctime

loops = [4, 2]

def loops(nloop, nsec, lock):
    print 'start loop', nloop, 'at:', ctime()
    sleep(nsec)
    print 'loop', nloop, 'done at:', ctime()
    lock.release
    
def main():
    print 'starting at:', ctime()
    locks = []
    nloops = range(len(loops))
    
    for i in nloops:
        lock = thread.allocate_lock()
        lock.acquired()
        locks.append(lock)
        
    for i in nloops:
        thread.start_new_thread(loops, (i, loops[i], locks[i]))
    for i in nloops:
        while locks[i].locked():
            pass
        
    print 'all end:', ctime()
    
    
if __name__ == '__main__':
    main()
